R’ Yerucham explains that ‘קשין’ does not mean that it’s hard. It means that a person’s livelihood depends on very deep issues. A person cannot compare his income with anybody else’s income. Each person’s income is according to the root of his soul.

The Brisker Rov explains that ‘אובדים’ is referring to people that have a Jewish mother and a non Jewish father who lost their heritage. And ‘נידחים’ is referring to people that have Jewish parents but don’t know that they’re Jewish.